Abstract: Apparatus, systems, and methods for monitoring one or more batteries are disclosed. One such apparatus may include a battery management device. The battery management device may include a sensor configured to detect a characteristic of a battery, a processor communicatively connected with the sensor to receive a signal indicative of the characteristic of the battery, a network interface to send the signal to a server through a network and to receive an instruction from the server through the network, and a control circuit to control one or more aspects of the battery based on the received instruction.

Abstract: A battery management balancing device provides local discharge circuits for individual cells of a battery pack, where the discharge circuits include a power transistor. The use of a power transistor yields a controllable balancing current through that transistor between a cathode and anode of the individual cell. A microcontroller monitors a state of charge of each cell, such as by measuring the cell voltages, and provides control signals, for example indicating a target voltage for each cell, that drive the power transistors in designated discharge circuits.